Method Description Setup
Digital
communications
A host writes temperature data
to the meter at appropriate
intervals. This data will be
available in addition to the
internal RTD temperature data.
a. Choose Device Settings → Process Configuration → Optional
Setup → External Pressure/Temperature → Temperature.
b. Set Temperature Compensation to Enable.
c. Perform the necessary host programming and
communications setup to write temperature data to the
meter at appropriate intervals.
2. Choose the method to be used to supply pressure data, and perform the required setup.
Method Description Setup
Polling The meter polls an external
device for pressure data.
a. Choose Device Settings → Process Configuration → Optional
Setup → External Pressure/Temperature → Pressure.
b. Set Pressure Compensation to Enable.
c. Choose Device Settings → Process Configuration → Optional
Setup → External Pressure/Temperature → External Polling.
d. Choose an unused polling slot.
e. Set Poll Control to Poll as Primary or Poll as Secondary.
Option Description
Poll as Primary No other Primary HART masters
will be on the network. A field
communicator is not a HART master.
Poll as Secondary No other Secondary HART masters
will be on the network. A field
communicator is not a HART master.
f. Set External Device Tag to the HART tag of the external
pressure device.
g. Set Polled Variable to Pressure.
Digital
communications
A host writes pressure data
to the meter at appropriate
intervals.
a. Choose Device Settings → Process Configuration → Optional
Setup → External Pressure/Temperature → Pressure.
b. Set Pressure Compensation to Enable.
c. Perform the necessary host programming and
communications setup to write pressure data to the
transmitter at appropriate intervals.
Postrequisites
Need help?
If the value is not correct:
• Ensure that the external device and the meter are using the same measurement unit.
• For polling:
— Verify the wiring between the meter and the external device.
— Verify the HART tag of the external device.
Configuration and Use Manual Configure process measurement applications
MS-00809-0200-1600 May2024
Configuration and Use Manual 57
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